francium

1. (uncountable, usually)The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.

   Francium

   фра́нцийfráncij

   фра́нційfráncij

   a radioactive element of the alkali-metal group discovered as a disintegration product of actinium

2. The chemical element (symbol Fr) with an atomic number of 87. It is an intensely radioactive alkali metal that is not found in nature.

   (countable, usually)An atom of this element.

1. The atomic number for francium is 87.

   ruАтомный номер франция - 87.

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2. Lithium, sodium, potassium, rubidium, caesium and francium are alkali metals.

   ruЛитий, натрий, калий, рубидий, цезий и франций - это щелочные металлы.

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3. At any given moment, there are perhaps eight francium atoms in the whole of the earth.

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4. Francium's atomic number is 87.

   ruПорядковый номер франция - 87.

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5. Francium is a chemical element of the symbol Fr.

   ruФранций — химический элемент, который обозначается символом Fr.

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